// JavaScript Document
function show_additional()
{
  $('.additional').fadeIn(500);
  $('a#show').addClass('activeForm');
  $('a#hide').removeClass('activeForm');		
}

function hide_additional ()
{
	 $('span.additional').hide();
	 $('a#show').removeClass('activeForm');
     $('a#hide').addClass('activeForm');		
}